990872108 has 24 divisors (see below), whose sum is σ = 1814410752. Its totient is φ = 472587984.

The previous prime is 990872101. The next prime is 990872119. The reversal of 990872108 is 801278099.

It is not an unprimeable number, because it can be changed into a prime (990872101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19091 + ... + 48437.

It is an arithmetic number, because the mean of its divisors is an integer number (75600448).

Almost surely, 2^990872108 is an apocalyptic number.

It is an amenable number.

990872108 is a deficient number, since it is larger than the sum of its proper divisors (823538644).

990872108 is a wasteful number, since it uses less digits than its factorization.

990872108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29741 (or 29739 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 990872108 is about 31478.1211002182. The cubic root of 990872108 is about 996.9480644986.

The spelling of 990872108 in words is "nine hundred ninety million, eight hundred seventy-two thousand, one hundred eight".